Adding meridians and parallels on world map in QGIS

Question

I'm working on a world map in which I'm using as overlapped layers Bing Aerial, The natural Earth Vector (from natural earth data.com), and also a NASA night view because it's just nice!
I would like to add the standard meridians and parallels, I heard something about grids, but those you have to scale manually. Isn't there somewhere a download link for a layer that adds them? Or alternatively, how should I make them?

I found a post on here which could be helpful to understand what I'm looking for:
Create a Robinson world map with grid and coordinate frame in QGIS Map Composer?
The last reply to that question refers to a file called 110m_graticules_10 inside the Natural Earth package which I guess is for I was searching (not sure though), although the geographical lines layer is nice the grid showed in the last pic is what I was trying to replicate.
I tried to search for 110m_graticules_10 inside the folder Natural Earth but I could find it.

Randcelot · Answer

The UC Berkeley library provides spatial data files with different latitude and longitude grids on them. Looks like they were originally produced by the North American Cartographic Information Society.
https://geodata.lib.berkeley.edu/?f%5Bdc_format_s%5D%5B%5D=Shapefile&f%5Bdc_publisher_s%5D%5B%5D=North+American+Cartographic+Information+Society&f%5Blayer_geom_type_s%5D%5B%5D=Line

geozelot · Answer

You could just use
<QGIS>|Vector|Research Tools|Create Grid...

where you

chose your Grid type (likely Line)
set the Grid CRS (i.e. to EPSG:4326 - WGS 84)
set the spacing you want in degree

and hit Run.

Ian Turton · Answer

It sounds as if you are looking for the Natural Earth Geographic Lines layer

Tropical circles, Polar circles, International dateline, and Equator. Same as 50 million geographic lines.

Adding meridians and parallels on world map in QGIS

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